body {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    overflow: hidden;
    margin: 0;
    color: #64FFDA;
    background-color: #0A192F;
    font-family: monospace, sans-serif;
}
.container {
    width: 90vw;
    display: flex;
}
.panel {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    height: 80vh;
    border-radius: 50px;
    cursor: pointer;
    flex: 0.5;
    margin: 10px;
    position: relative;
    transition: all 700ms ease-in;
}
.panel:hover {
    box-shadow: 3px 3px 3px #64FFDA;
}
.panel h3 {
    position: absolute;
    bottom: 20px;
    left: 20px;
    margin: 0;
    opacity: 0;
    font-size: 24px;
}
.panel.active {
    flex: 5;
}
.panel.active h3 {
    opacity: 1;
    transition: opacity 0.3s ease-in 0.4s;
}
@media (max-width: 480px) {
    .container {
        width: 100vw;
    }
    .panel:nth-of-type(4),
    .panel:nth-of-type(5) {
        display: none;
    }
}